/*
silverPDF is sponsored by Aleyant Systems (http://www.aleyant.com)

silverPDF is based on PdfSharp (http://www.pdfsharp.net) and iTextSharp (http://itextsharp.sourceforge.net)

Developers: Ai_boy (aka Oleksii Okhrymenko)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above information and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR SPONSORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

*/
#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion
#if GDI
using System;
using System.Collections;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
using PdfSharp.Drawing;

namespace PdfSharp.Forms
{
  /// <summary>
  /// A combo box control for selection XColor values.
  /// </summary>
  public class ColorComboBox : ComboBox
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="ColorComboBox"/> class.
    /// </summary>
    public ColorComboBox()
    {
      DropDownStyle = ComboBoxStyle.DropDownList;
      DrawMode = DrawMode.OwnerDrawFixed;
      Fill();
    }

    XColorResourceManager crm = new XColorResourceManager();

    /// <summary>
    /// Gets or sets the custom color.
    /// </summary>
    public XColor Color
    {
      get { return this.color; }
      set
      {
        this.color = value;
        if (value.IsKnownColor)
        {
          XKnownColor color = XColorResourceManager.GetKnownColor(value.Argb);
          for (int idx = 1; idx < Items.Count; idx++)
          {
            if (((ColorItem)Items[idx]).Color.Argb == value.Argb)
            {
              SelectedIndex = idx;
              break;
            }
          }
        }
        else
          SelectedIndex = 0;
        Invalidate();
      }
    }
    XColor color = XColor.Empty;

    void Fill()
    {
      Items.Add(new ColorItem(XColor.Empty, "custom"));
      XKnownColor[] knownColors = XColorResourceManager.GetKnownColors(false);
      int count = knownColors.Length;
      for (int idx = 0; idx < knownColors.Length; idx++)
      {
        XKnownColor color = knownColors[idx];
        Items.Add(new ColorItem(XColor.FromKnownColor(color), crm.ToColorName(color)));
      }
    }

    /// <summary>
    /// Keep control a drop down combo box.
    /// </summary>
    protected override void OnDropDownStyleChanged(EventArgs e)
    {
      DropDownStyle = ComboBoxStyle.DropDownList;
      base.OnDropDownStyleChanged(e);
    }

    /// <summary>
    /// Sets the color with the selected item.
    /// </summary>
    protected override void OnSelectedIndexChanged(EventArgs e)
    {
      int index = SelectedIndex;
      if (index > 0)
      {
        ColorItem item = (ColorItem)Items[index];
        this.color = item.Color;
      }
      base.OnSelectedIndexChanged(e);
    }

    /// <summary>
    /// Draw a color entry.
    /// </summary>
    protected override void OnDrawItem(DrawItemEventArgs e)
    {
      int idx = e.Index;

      // Nothing selected?
      if (idx < 0)
        return;

      object obj = Items[idx];
      if (obj is ColorItem)
      {
        ColorItem item = (ColorItem)obj;

        // Is custom color?
        if (idx == 0)
        {
          string name;
          if (this.color.IsEmpty)
            name = "custom";
          else
            name = this.crm.ToColorName(this.color);

          item = new ColorItem(this.color, name);
        }

        XColor clr = item.Color;
        Graphics gfx = e.Graphics;
        Rectangle rect = e.Bounds;
        Brush textbrush = SystemBrushes.ControlText;
        if ((e.State & DrawItemState.Selected) == 0)
        {
          gfx.FillRectangle(SystemBrushes.Window, rect);
          textbrush = SystemBrushes.ControlText;
        }
        else
        {
          gfx.FillRectangle(SystemBrushes.Highlight, rect);
          textbrush = SystemBrushes.HighlightText;
        }

        // Draw color box
        if (!clr.IsEmpty)
        {
          Rectangle box = new Rectangle(rect.X + 3, rect.Y + 1, rect.Height * 2, rect.Height - 3);
          gfx.FillRectangle(new SolidBrush(clr.ToGdiColor()), box);
          gfx.DrawRectangle(Pens.Black, box);
        }

        StringFormat format = new StringFormat(StringFormat.GenericDefault);
        format.Alignment = StringAlignment.Near;
        format.LineAlignment = StringAlignment.Center;
        rect.X += rect.Height * 2 + 3 + 3;
        gfx.DrawString(item.Name, Font, textbrush, rect, format);
      }
    }

    /// <summary>
    /// Represents a combo box item.
    /// </summary>
    struct ColorItem
    {
      public ColorItem(XColor color, string name)
      {
        Color = color;
        Name = name;
      }

      public override string ToString()
      {
        return Name;
      }

      public XColor Color;
      public string Name;
    }
  }
}
#endif